Method and a device for cleaning of crankcase gas
AssigneeAlfa Laval Corporate AB
InventorMats Ekeroth
Life of this patent
Estimating the term…
Abstract
For cleaning of crankcase gas produced by an internal combustion engine, that is arranged for propelling a vehicle, use is made of a centrifugal separator having a centrifugal rotor that is mounted on the vehicle. The cleaning efficiency of the centrifugal separator is changed by changing the rotational speed of an electrical motor, that is connected to a source of current on the vehicle and arranged for driving said centrifugal rotor.
Claims21
A device for cleaning of crankcase gas being produced during operation of an internal combustion engine that is arranged for propelling a vehicle, said device comprising:
- a centrifugal separator having a centrifugal rotor that is arranged for mounting on the vehicle and for cleaning of said crankcase gas;
- an electrical motor, which for its operation is connectable to a current source available on the vehicle and which is arranged for rotation of the centrifugal rotor;
- and
- equipment for changing the cleaning efficiency of the centrifugal separator, including control equipment arranged for changing the rotational speed of the electrical motor and, thereby, of the centrifugal rotor during maintained operation of the combustion engine, said equipment being connectable to a source of information available on board the vehicle.
A method of cleaning crankcase gas produced during operation of an internal combustion engine, that is arranged for propelling a vehicle, comprising:
- using a centrifugal separator which has a centrifugal rotor, mounted on the vehicle, for cleaning of the crankcase gas;
- using an electrical motor, which for its operation is connectable to a source of current available on the vehicle, for rotation of the centrifugal rotor;
- and
- changing the separation efficiency of the centrifugal separator by changing the rotational speed of the electrical motor and thereby of the centrifugal rotor, while maintaining the combustion engine in operation, the rotational speed of the electrical motor being changed by guidance of data collected from an information source available on board the vehicle.
Dependencies are inferred from the claim text.